Bridgelux EB series gen 2 stips. They're the best available at the moment, cheapest price, best efficiency and best coverage, you really can't go wrong..
What voltage is your mains power?
If you're completely new to diy led spend some time searching up others builds to get a rough idea of what's involved.
Check out this website with example strip designs. ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/
The only thing I don't like about the designs is the use of CV(constant voltage) drivers instead of constant current. Though when you've got a rough idea of what you want post in the led sub forum and you'll get plenty of help with build design/driver selection.
Ask any questions you want I'll try help
