No, actinics are useless for freshwater plant growth. You'd have to replace them with appropriate bulbs.
For high light plants, you will have to have 3+ watts per gallon of normal fluorescent lighting, AND Co2 injection. Anything over 2wpg should have injected CO2, and for a 55gallon tank, pressurized CO2 is your best course of action, and that'll run up to $200 for the whole setup (tank, regulator, diffusing device)
Average cost of a high tech, planted tank with 3wpg is $10-$15 per gallon of tank size, and that doesn't count plants or fish, just substrate and equipment.