Using external crossvover enclosure for amp stand?

Greetings - this idea has been knockin around the brain for a bit, so thought I'd better seek some "sound" advice. I need to replace the tweeters in my Hales T-8s due to damage beyond my control, so while searching some past threads, I've become interested in the idea of upgrading the crossovers as well. Caveat - should this prove to adversely affect the sound of the Hales, I would prefer having the capability to return to stock condition.

I run Clayton monos which are approx. 9.5 X 18.5 in., and for which I've been wanting some type of amp stand to get them off the floor.So the idea is to have custom stands built (basically 2 rectangular boxes) w/ removable tops, so that access to the interior would provide space for the new crossovers. So, for the technically inclined, could this pose a problem of say either electrical (emf?) interference from amp to crossover, or mechanical, regarding micro vibrations being transferred. If so, could there be any solutions employed, such as some type of shielding and/or composite top. I have no idea how big the crossover boards need to be, but maybe both ends of the box could be sectioned off and filled w/ lead shot for ballast.

So that I'm clear on this - could the stock crossovers simply be bypassed inside the speakers, taking the driver leads to the speaker jacks, and then connecting w/ a jumper cable to the external crossover output jacks?

One final question - would anybody care to suggest a good wire to use for the point to point paths on the boards, without breaking the bank?

Thanks alot for any and all help - and please don't hesitate to shoot this down if the idea is based on some misconceptions.

A belated Happy New Year,
Tom