You can repot in flower. The plants want a gallon of dirt for each foot of main stem.

Wood chips aren't good.

A pH meter or liquid indicator is important if you aren't certain of your soil pH, and you will need it eventually anyway to help troubleshoot any deficiency/tox symptoms you see.

If you have an agway near you, get the composted cow manure with humus, mix in 40% perlite, repot into that, and watch your plants look better in DAYS- seriously, it's rich organic goodness and pH buffered at 6.8-6.9. I use it personally throughout my grow and have NO problems with pH EVER.

Bugs, treat tthem with pyrethrin. Do it NOW becuase once you get bud-set, you're VERY limited in what you can do about pests.

Oh- and you need to fertilize!!!!