Well water is much better than tap water anyways. No cholrine or chloramines to contend with. If you rtank has no brace on the bottom, I highly suggest a piece of 1/2" foam board underneath it. Make sure the stand is completely level as well in all directions. It will provide you with much more piece of mind.
You can definitely build a reef on a budget. It's all about being smart with your purchases. Buy the right equipment first time around so you are not having to upgrade equipment over and over again. The same can be said with corals and fish. Try not to impulse buy. Research what you want and stick to the plan as much as possible.
As for the rock. 1 lbs per gallon would be lots for you, as long as you are sticking with dry rock. When you buy live rock, it is highly saturated with water so your paying more per lbs of actual rock. Saying that, I do suggest getting 5 lbs or so of actual clean live rock to "seed" your dry rock. The live rock will contain all the necessary bacteria and it will then colonize on your dry rock. Just be sure the piece of live rock is pest free from an established tank.
You don't really need to worry too much regarding rock weight. It is all relative to your bio-load. If you are only planning a few fish and corals, you can get away with less rock. If you are thinking lots of fish and / or corals, then you have to add more rock to handle the nitrates.
I know Advanced Reef in Milton sells a lot of dry rock and ceramic pieces. Call Flavio and see what he has. That is somewhat local to you at least. I would buy a couple extra pieces and just talk to him to make sure it is okay to bring back the ones you don't use. Just makes it easier when you have some options for aquascaping.
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