Ride the Momentum or Slow My Roll?

[Austin Works]

I am starting to get more quality leads than I can handle financially, but I know I could make it work by taking on some extra risk (balance transfer from credit cards). I have an income from my job, but this doesn't cover all bills, leaving real estate to cover the rest. To this point, I have been successful in covering my costs of living plus enjoying the extras in life through flipping houses, but I would like to scale. My dilemma is that I've got my cash tied up in 2 flips at the moment, and I'm getting more quality leads than ever before.  Should I just turn these deals away to avoid taking on more than I can financially handle, or should I risk it all by taking balance transfers from credit cards to purchase these additional deals? My real concern is covering so many payments every month, since flipping comes with such a delayed payday. Is this just typical growing pains for a growing real estate investor?