CFL's and Lumens

All of the CFL bulbs I saw at Lowe's that were 20-26watt were 1600-1750 lumens. Can I use say 4 of these to total close to 6500 lumens for veg or can I find 6500 20watt bulbs? I'm trying to stick with Lowes or Home Depot until I get more funds.

U can use these but u will need a bunch, split the sockets and u can get 6 or 8, also get the cool white for veg and soft white for flower