Confused Switching My Case from K1 to I-130

Hey Guys im 25 and my spouse is 20 we have been hanging out for 6 months i travel back and forth to india. I was really planning to get married right after K1 is approved but I got some feedback as to it was not the right decision and I can get denied. And personally i do not want to take the risk to wait for 2-3 years. Which is why i am planning to go for I-130. Now since im on a budget and do want an RFE is getting court and marriage with just our family friends enough? because im planning to have a grand wedding in a year after my wife gets her approval.