please recommend plants for my tank.

I think the reason you aren't getting many specific recommendations is because your options are wide open. Normally, when people say "what can i grow", it's because there's some sort of limiting factor... ie lighting, plant-vicious livestock, brackish conditions...

From the information you've provided, your options are open to what's available to you. What you plant is more a matter of your personal tastes than what's likely to do well in your tank. MG posted the link to plantgeek above. they have a section that categorizes plants by lighting requirements. That would be a good place to start. Also, if you post your tank specs in the WTB plants forum, I'm sure that some of the more experienced members here could hook you up with specific packages to suit your needs. Keep in mind also that starting slow will help you learn without investing much. You'll be surprized at how quickly it will begin to make sense to you and before long you'll have a tank you never thought you'd have!

IMO, with that light level, you WILL need co2, and I don't think DIY is going to cut it.

For specific suggestions, I'm a fan of many of the hygro species and crypt species. They're undemanding and when healthy can be just stunning to look at. And in a tank that size you could do pretty large patches. Both of these are low light plants, but should do okay with high light as long as they get proper co2 and ferts. There are good guides out there to diagnose nutrient deficiencies.
 
good info jbradt.

honestly... that much light is going to be a bear to wrestle for a starter tank. i'd go with a whole lot of cheap, undemanding plants but be weary of super slow growers at first. the idea is to pack the tank as soon as you can to help aid in keeping algae at bay. any java ferns, java moss, etc. i'd keep very near to the bottom with lots of shade plants above. i'd stay away from anubias since they grow too slow and will collect algae fairly quickly. an amazon sword and some vals should enjoy that light and grow pretty good providing a bit of shade for other plants to prosper as well as some of the less demanding stem plants would be a good place to start imo.

once you have a good handle on things and your plants are growing in good you can sell or trade them here to get more desirable plants that may be a bit more expensive to try out.
 
To add to Dun... you might also think about some floaters... frogbit, redrootfloater, etc, to help block some of the light from below. A nice canopy of floaters can really look amazing as well as shielding the main water column.
 
I've got lots of plants in lots of tanks. The ones I like the most are: Anubias congensus; Apon longiplumulosus, crispus and Madagascar lace; Cryptocoryne wendtii red and nudulata; Isoetes lacustris; Java fern and Java fern lace. Vals are also nice and stay short under low to medium light. It will carpet the tank with 40 watts of light in a fifty-five. Cool effect.
 
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