It is good to replace all of those hoses, the soft EVAP ones anyway, after a decade or so they all become so brittle that you have to replace them.
I had to replace some of my rubber connectors as well.
I am betting the gas leak is from the 2 o-rings in the connector, I had the same leak, if you barely press down on the connector while key is in ON position it sprays out a little I bet.
I have a thread somewhere about mine when it leaked, I ordered several different o-rings before getting the right ones, and once I got the right ones it was really hard for me to get them in there, well the innermost one anyway.
I ended up getting proper rated fuel injection hose, and looked on the left side of my car, bottom of engine bay, and I cut that line, hoked the hose to it, and clamped it.
Then I removed the quick connect connector from the fuel rail, slid the hose on, and clamped it.
I'm not sure what to suggest as if you get the o-rings, and a pick set, then you may get lucky and be able to replace both of them once you remove the old ones, if you cannot replace them you are stuck with having to consider the method I took.
I have heard a few say they replaced them easily, so maybe I was just unlucky.
They have a fuel line repair kit, I tried it, the thing is I could not heat up the line enough to slide the line over the copper barb used to hold the two together.
If you don't cut it to splice just right, then it is almost impossible to get to splice up, you have to have a cut where the straight part of the line coming from the connector is, if you cut it in the *-curve it won't work..
Amazon.com: Customer Reviews: Dorman 800-059 Nylon Fuel Line Repairkit
I just read another thread where a guy had issues getting the o-rings replaced, he opted to go the route I went.
If you do that the hose dimensions are below.
OD is 3/8"
ID is 5/16"
A 3/8 fuel injection clamp would be needed.
I'll see if I can find links for the o-rigs you need in case you opt to do it that way, will have to look in the morning though, had a long day and falling asleep at the wheel, lol
EDIT: I think these are the needed o-rings, need to verify though, I think the ones for steel lines may be different than the ones for nylon lines,
As mentioned you will need a set of picks, and needle nose pliers to try to replace them.
Dorman OE Solutions - Fuel Line O-Ring Kit
Part # 800-013