Advice on a new toy..

So I’ve decided to try some anal play and I’m going to go pick up a toy later today but I’m not sure if I’m over-shooting. I know I’m going to get a striker for my cock, but I also want something to fuck my ass with. I’ve fingered it before and used my wife’s plug and a really small dildo a long time ago. When I watch big dick or pegging porn, I feel like I want to feel a big cock in my ass, and I want to get a 8, 9, or 10 inch and thick realistic dildo, but I don’t know if I’m just not realizing how big a practical 6 inch toy will feel. Has anyone been in this position? I mean…I feel like I want to get FUCKED…but do I just not know what I’m in for?