It's going to be hard to set up by eye, without equipment you're just guessing. If you have tyres you want to waste then go for it.
Exactly my point
I aligned the front only of my RVR with string lines and straight edge, I measured half dozen times on flat ground rolling back and forward and got what I thought was a very decent initial alignment.
It felt great on the road and I drove it for about a week, it didn't pull to one side or squeal around corners at all. When I got it aligned it was 17mm out! So the point is no matter how good you think you have adjusted the suspension/toe/camber/etc. , front or rear, prepare to be miles out and eat tyres if you do it yourself.