Hey bro, sorry to hear about the mishap
Here is what I recommend. Go to RCworks.com and buy a couple of their cores they are very affordable but high quality.
If you allready have gear for the 50, buy the 48" reaper and do the Rite build on it. This will be a cheaper way to learn then the Ritewing way. Also pick up the smaller $20 kits to practice on first.
When you are confident with your building and flying, get yourself another Rite wing and give it another go. You will save money in the long run.
Not saying you can't fly one of these wings off the bat as I learned on a wing people said was the worste choice for a trainer and I have never had simulator experience. But I will tell you it'll be scary. You'll need some razor sharp reflexes and a good pair of eyes.
These wings move!!! and they move fast. Start with a slower setup and move your way up. And most of all good luck! Ask us anything and we can help ya here.