If I was you, I would suck it up and bring the radiator to a specialist who repairs them. Ask him to "boil it out" and clean it up. In my neck of the woods, they charge $ 80. It is money well spent! From there, you know where you stand and you know it checks out. Replacing all cooling lines is obvious to those who work on vehicles. If you are new to it, it isn't. When you are just starting out and on a budget, you try to get away with as little as possible. When you have actually had to repair vehicles in the field or along the highway in your church clothes, you tend to look at things differently. Think of it like this: All cooling lines are receiving the same "wear and tear". Replace them all. As mentioned previously, once the hose's integrity is compromised, it is just an accident waiting to happen... and it will happen at the most inconvenient time imaginable. You received some good advice from other forum members. I would listen to it and drive on.
The more you begin to look at the jeep not as parts, but as a vehicle with systems, you will be on your way to be a "shade tree" mechanic, even if you are on a tight budget.