I don't know about PCs but T5s should be replaced every 12-18 months so I'm sure you're due for new ones. Fowlr
doesn't require any lighting so u could save the $ on the bulbs to put toward ur next light.
LEDs are the way most serious aquarists are going nowadays.
I currently have t5ho but plan to upgrade to LEDs eventually so I can grow sps
u have time to do some research and consider your options since you want to wait 8-12 months for your tank to be more established anyway.
If you're thinking reef (which you most likely will after seeing all the awesome corals at your lfs
every week) the light is probably your most important purchase.