I need to find a rack or something to put 4 o 5 components in there with a platform on top for my deck - assuming this is a good place to put a turntable.
Any thoughts or preferences ?

Non-welded racks are not much use if you want you turntable on a platform which is rigid (well worth having). Otherwise, wall shelves are a really good alternative if you can't get a one piece solid rack or if you have a sprung wood floor.
Welded Target Audio racks are hard to find online but I've seen them in specialist dealers.
Stereo Unlimited had some the other day (San Diego).

<ul><li><a href="http://www.dynamichomedecor.com/Apollo-B4-200.html">Dynamic Home Decor</a></li></ul>

at least in the old days of turntables in clubs it was the best way to stop skipping, four heavy duty rubber bands, sometimes more then one per leg. wrapped around the legs of the turntables.

<center><img src="http://www.sumikoaudio.net/sme/images/products/prod_model20.jpg"></center><p>Not sure that I'd want a turntable to bounce though. Even with a suspended sub-chassis.

Less vibrations on a wall comnpared to floors<ul><li><a href="http://www.audioadvisor.com/products.asp?dept=123">AA</a></li></ul>

The audio rack that stacks all the equipment is a Target. However I modified it by filling its hollow tubes with silica sand and the regular press wood shelves (cheap) are replaced by 3/4 inch thick granite ones. This makes the rack a lot heavier/beefier with more mass and help potential vibration issues.

<a href="http://www.racksandstands.com/VTI-AGR-404-B-AGR-404-S-VI1019.html">VTI AGR audio rack</a>

There are many to choose from from this website but I went with this particular model for several reasons: because it's heavy , each glass shelf is 10mm thick and can support heavier components up to over 200lbs, it's deep enough to hold longer components, and it's modular so you can swap 7,9, 11" posts to custom fit your gear should you ever upgrade to different components or if you just want to adjust the height. I actually went with a 5-shelf version of this one so the cats are less likely to make a home atop the turntable cover. This thing is solid.

I have the same rack, but I've yet to do the mods you've done apart from the top shelf where the t/t sits. It has a acrylic shelf sitting on a BASE SP01 isolation platform which is supported by the inverted point suspended top shelf spikes. Thankfully my floor is concrete.

I keep my 60lb amplifier on the bottom shelf to aid with low center of gravity effect.

Although not Target - It is fully welded and if I can take the tops off I could fill with buckshot or sand to give it bit more weight and change the shelves as necessary. The top shelf is also on 'four cone points'.<ul><li><a href="http://www.dynamichomedecor.com/merchant.mvc?Screen=PROD&amp;Store_Code=DHD&amp;Product_Co de=Apollo-B5-200&amp;Category_Code=">Apollo B5</a></li></ul>

But in the end I had to stop at a given point so I went with granite.

I was also thinking of using "special" conic spikes on all my equipment but here again I said "slow down" and ended up just spiking the Meridian 602 transport.

Like you my lower shelf is where I keep my 3 analog amps for the tactile transducers.

Not sure if it's Dome or Target...<ul><li><a href="http://www.needledoctor.com/Dome-HF570-5-Shelf-Audio-Rack-Metal-Tubes-Tempered-Safety-Glass">Target Dome HF570</a></li></ul>

Especially the ones with the spikes on each corner. The one with three spikes per shelf states that each leg is fillable...<ul><li><a href="http://www.audio-video-furniture.com/NoBot/VTI-Audio-Racks--C31-467.htm">VTI options</a></li></ul>

Even though there are some turntable that react better with softer materials supporting them, I'm a firm believer in keeping things....well, firm from the ground up.
You have a rack which doesn't ring now that you've filled it and granite doesn't typically resonate as much as wood.
You can't beat a one piece for stability. They are completely wobble-free if you do the spikes right.
And you have no digital components on the rack, which keeps interference minimized.