Just so I understand, will you need to entirely do away with the hood or could you just change out the light?

This is a critical juncture for you. Definitely take some time to think about what you want. If you think you want to eventually do a variety of live plants in your tank then you'll need to get a good plant light. If you want to just keep it simple then you could just buy a hood with a single florescent t8 bulb. That's what I have on my ten and I grow java fern, moss, anubias and some type of sword without a problem.