How much is "too much" on the replacement trigger route?
I don't generally advocate the brand new to gunsmithing go about taking material off their trigger.
If memory serves, the Ruger does not have standard adjustments, you have to remove material to achieve a lighter trigger with less creep.
Stalkingbear, a Vendor here, is a Ruger lover and he would probably give you a great price on doing you a top notch trigger. I would PM him and see what he thinks.
As for another option, Timney is a very good trigger, but there are other cheaper options that are completely adjustable.
Rifle Basix, Custom Bolt-Action Triggers