I'm building up my modlist for a new playthrough, and precisely today I added Realistic Leveling. As the OP, I want to use only Wrye to install and manage my mods, and I remember failing to make RL work in the past, so I used other levelling mods.
This time, though, I thought I'd try RL. I'm more confident now when it comes to installing, adjusting and troubleshooting, so I went for it. I can't tell for sure the mod is properly working because at this stage all I do is install a couple of mods, launch the game and run for a while for the IC districts and nearby places checking the game doesn't lag, freeze or CTD, that the initializing messages fire up as expected and that the easy to spot/test features of the mods I just installed work as intended. To make sure RL is running fine, I have to obviously level up, that is never gonna happen during these test runs, but what I can say is that this time I had no error messages popping up.
So what I did:
-Put the RL mod in the Bash Installers folder.
-Launch Wrye Bash, go to the Installer Tab.
-Locate Realistic Levelling, right-click on it and choose "Unpack Project", name it whatever you like (I keep the original name but deleting the nexus number reference), click OK.
-Right under Realistic, you'll see the new entry. To its left, it will be a pink diamond shape box, instead the usual square one.
-Delete the original mod from the Installers Tab.
-Rick-click the project and choose Open. A windows folder appears showing the content of the mod.
-Get into "menus" and delete the two menus you don't need. For example: If you are using DarnUI, you keep levelup_menu_darnui and get rid of the other two. Then rename it levelup_menu.
-Get back to the root directory of the project and delete the "omod conversion data" folder. If you like, you could delete the Realistic Leveling readme also.
-Edit "Realistic Leveling".ini. I use Notepad++, it's free and much user-friendlier than Windows Notepad, but any text editor would do. You need to edit these lines:
set aaRealisticLeveling.mode to ; default = 3
you have to replace with one of those numbers 0,1, 2, 3, 4. Choose your preferred option. They are all explained in the .ini, just above
the line you're going to edit.
set aaRealisticLeveling.levelMax to ; default = 65
Replace with 65, or another alternative value if you want to speed up/down leveling, but the default 65 would do for now.
setGS iTrainingSkills ; default = 5
Replace with any number between 1-5. I think you could go higher, but I'm not sure.
The .ini document could be edited further, and you should do it later on to tailor the mod options to your needs and tastes, but I just pointed out the adjustments needed to get the mod running and working.
-Close the project. If you have "Auto-refresh Projects" ticked off (you can check that, and enable/disable that option and others right-clicking Package in the Installers Tab), then right-click the project and choose Refresh, so the changes you just made into the Project take place. If the "Auto-refresh Project" option was on, you don't need to do this.
-Now rick-click the project and choose install. The diamond shaped box will turn green and Realistic Leveling is installed.
I hope this helps.