1. I agree with your plan to buy the hood and light separately. You may want to think about buying a compact flourescent light fixture. If you don't want to do that I have grown anubias, java fern, and cryptocorynes using just a single tube strip over a 29. However, a single tube strip greatly limits your options for plants.
2. This is purely personal opinion, but I am not a big fan of the Whisper filters. I would use an Aquaclear 70 (300 gph) as my choice of power filter.
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+3579+3608+3610&pcatid=3610 A canister filter would be another great option if it's in the budget. I used an XP1 on my 29. The manufacturers' tank size ratings on filters are generally really overrated IMO, so don't pay too much attention to them.
3. I use Ebo Jager heaters because I can get them locally for cheap. They have been extremely reliable for me. As krytan mentioned, Stealth heaters are also great.
4. Your options for plants are totally dependent on your choice of lighting. If you'd like more detailed recommendations, I suggest posting in the planted aquarium forum. You'll get tons of help that way.
5. I agree with krytan about fishless cycling. This is definitely the easy way to go, since you will be looking at large frequent water changes during a fishy cycle. You'll need to buy a test kit so you can monitor your progress while you are cycling, and then for routine testing once you are done cycling. I use the API freshwater master test kit and highly recommend it, but whatever you choose make sure it is a liquid reagent kit. Test strips are really inaccurate so don't waste your money on them.

This article should be helpful:
http://www.aquariacentral.com/forums/showthread.php?t=81388
6. I'd caution you about listening to advice from most pet stores. A lot of people, myself included, get off to a rocky start in the hobby that way. AC can help with any questions you might have, and we're not in the business of selling you things.

Good luck!!!