You WILL crash a lot (might, ha! such a silly. Don't worry, with the right plane it can be kinda fun)
That pits is actually a compressed snowstorm just waiting for you to release it's inner flurry. Don't buy it. It's easier to repair then balsa but the repairs get even heavier way quicker.
The YAK is a fairly sturdy, EPP plane that will take some abuse and you will abuse it, probably more then you'd like. But more then likely the gear in it will be ok OR cheap enough to replace along with the plane.
Now, as for your experience. Does that mean you got a couple flights out of the Bix before it was it's own pile of foam and glue OR have you pretty much wrung it out, can put it where ever you want it and want something a little more active now. Be honest, your answers will greatly improve your enjoyment of this hobby. Soo many times I've had people tell me they know how to fly and want to buy that P-51 because the box says 'so easy to fly it would make a good trainer'. Boxes, can't trust em. Then I find out that they have set right seat in their buddies Cessna and got to move the wheel and pedals for a bit and they want their money back because this box full of freshly minted sticks-n-grass wasn't as easy as advertised on the box. As discouraging as I can sound I actually have had to knuckle under and sell the darn kit. Probably could have refused but it's a judgement call. Better then half came back, listened and bought the correct airplane and are still flying today. Others are playing with cars or boats or bought motorcycles and drive between bars on Wednesday nights.
The YAK, with the controls set down quite a bit, the cg a little forward of where a 3d pilot would want it and the correct mindset would probably make a decent enough 2nd airplane. Set up correctly it will turn around within a wing span and hit you in the head when you first let go of it. Be aware of that. In control line, it's know that the right combat plane, set up correctly, makes a really decent trainer. But set up another way and it does 4 foot loops at 120 mph. I'd just try to nudge you toward the first side of the equation.
So, if you can fly the Bixler fast and slow, park it where you want it and your ready to move on to your next airplane I'd go with the YAK and take it easy with it while your reflexes catch up. There is also nothing wrong with building some of the FT Swappable series airplanes like the bloody wonder or the f-22, even the baby blender PLUS there will be an extra coming up shortly that will be a good sport flying, beginning aerobatic plane. You'll need the motor, esc, receiver for your TX and some servos plus a couple bucks of foamboard and other stuff, but you will be flying at the next higher level an airplane that you can totally destroy and rebuild and only cost a couple bucks while you get the Yak in and get it assembled.
Back in the day, our planes were made out of balsa. Our radios were made out of CB Absorbium and the slightest look would make glue joints pop while someone checking on their good buddy would make the control surfaces flinch or just lock all the way over. We also had to pass the box around because there were not any training cords yet. You got it easy, soooo easy. And if you get the YAK you wouldn't believe how much nicer it looks then some of my first planes.