you are making every mistake in the book of a beginner, but you are more stubborn and not perceptible to good advice than any other guy i have seen.
you go right ahead and a buy an e-heli, think it's cheaper, easier, safer and think you can fly indoors... but don't come back here and whine and complain... a lot of folks tried to tell you differently...
good luck, i for myself will stop responding to your questions, since you do not take advice anyway... unless it is what you want to hear
good luck to you and please don't hurt yourself.