I think I'm planning my own proposal

Ashton • Hyperthyroidism
My boyfriend and I when we first went out - not sure I'd call it a date - drove thru a Christmas Lights thing (not sure the appropriate name for this) and just talked shit about the whole thing. It made me laugh and we went through about four or five more times. Even though the whole thing was great. 
NOW we have bought rings and we've been together almost 9 months and we already agreed on a date 6 years from now. He didn't want to be engaged too early at first but now he's been talking about how it might be sooner cause when I'm over at his house he wants me to put it on and I keep saying no- just because I feel like it'll take away from wearing it publicly later. Idk. Just feels wrong.
I mentioned callaway gardens a while back and they're supposed to have this great drive through light thing like we went to. He keeps bringing it up. Should I pursue this for this December or wait? 
Maybe it's not for the proposal at all. But. It just clicked to me the other day. Now I'm getting nervous. Idk whether to go or avoid it.