I realy can't offer you much help.One plus is you have been flying heli-s and understand radios and such.Check all the control movement and make sure everthing is moving in the right directions.Try to get some altitude and go easy on the throttle and when it is going straight away from you (after you get it up aways and hopefully after bringing it around so you can do this ) try to trim it out with the trim levers for each control so it is flying straight and level as possible with zero control input.

I crashed a lot of planes trying to fly on my own. Some very short flights.....and some that seemed to last forever...all with the same final outcome. But that was me and i'm sure there are guys out there who have been able to make it on their own.It is nice though when you can have an expierienced pilot hook up to you with a buddy cord and take control if and when you loose control and give you good advice and save you some airplane models.

I hope it will work out for you and you have good luck in your attempt.

BIGMIG