Ryanair isn't your issue on this.
The fact you have checked in luggage and are attempting a late go through on a Friday Eve security is.
Tbf, I've got to say security has only taken us 30mins the last few times we've done it - even at peak times - and that's without fast track. So you probably will be fine.
But.
As I say it's having to check in and then dash in. You don't know how long it will ultimately take to drop your bags.
I wouldn't be cutting it as fine as less than two hours for this reason. Too many variables and you still have to walk to your gate when you get through.
You don't know when you might hit it at a particularly bad time, that's the problem. You should be fine, but you can't guarantee it even with fast track.
If you are smart pack to go through security. Not everyone does and it drives me nuts. It's simple but still people are fuck wits about it.
Be ready when you get to security.
Liquids in the right clear see through bag, in your hand. Electricals in a bag ready to put in a tray in your hand. Boots off if you need to when you get to security. Coats and jackets already off. You don't want to fanny about when you get to security.
Pack wise and pack smart and it'll save you at least five minutes at security. Then grab your shit as quickly as possible. You can always pack it in your bag when you get to the gate.
I don't get the point of fast track to get on the actual plane - it just means you get on the plane first and sit in your pre allocated space, and then have to wait for longer on the actual plane! In reality you don't go anywhere until the last person is on the plane.
The fast track at the gate only worked well for Ryanair when they didn't do pre allocated seats.