NC Florida to Montgomery

[mikemc53]

This may not be the easiest post to break down - I am not the best "explainer".
Will be heading out of NC Florida and hope to stay the first night at Montgomery South RV Park (never been before but it seems to fit the bill for the rest of our trip). I will be heading across I-10 and I use Google Maps instead of a RV trip app so hence the following question(s).
It routes me either up 231 or up 331 to get to the campground. I've been up 231 a number of times but the question I have, for either route, is that they take me on some seemingly small roads that I am unfamiliar with. I'm driving a 37 foot class A with a car and tow dolly behind and really don't want to get surprised by low bridges or hairpin turns that I don't know of. Any thoughts or anyone who has come into that campground from the same way(s) that Google is suggesting?
Just hoping that someone may have already done these routes and know whether or not they are viable. I'm one who doesn't mind freeways - prefers them actually - just because they are easy to navigate but I do not want to drive all the way west on I-10 to get to 65 and then head up. The routes on Google look good but, as I said, not sure of some of the smaller roads once you get off 231 or 331.
Thanks gang.

[Ray,IN]

US 321 N will take you to the old South bypass (US 80) West around Montgomery. That bypass will take you to I 65 N.
When we are going to Florida we overnight at The Woods RV park just off US 80 near I 65 due to the convenience, it is also very quiet. There is a Travel America travel center just before entering I 65 N to fuel up as you're leaving the RV park.