Tank weight/placement

[spikehs]

I have a nagging concern about the weight of my tank and was looking for some opinions. The tank is 36w x 30d x 20h (90gal)... by the time I add sumps, topoff water etc. etc. I would say the system volume would be close to 150gal.

I live in a new condo (westhills) that was made in the late 90's (98 i believe). The tank will be going against a weight bearing wall, and will be ontop of another platform that will probably extended a foot or so on either side to help spread the weight across a few more beams. I figure this will ok, but wanted to get some opinions. Thanks.