The conversion of the Anschutz single-stage trigger isn't all that expensive if you have a rudimentary knowledge of triggers and gunsmithing.
Neal Stepp (817-595-2090) sells the part for the non-LOP-adjustable version for about $68. The Adjustable version is around $85.
(I, personally, dislike the adjustable version as the 'shoe' feels uncomfortable. Most of the conversions that I've done were for people who preferred to go 'fixed' lop.)
The fix requires that you be able to separate the bbld action from the stock (2 screws), remove the trigger group (2 more screws), remove the weight-of-pull spring (1 screw and gently pry the spring loose with a flat blade screwdriver), push out a single pin, drop the trigger 'staff' and separate it from the 'cam', put the cam into the new 'staff' and reverse the process. Takes about 20 minutes if you've never done it. About 10 if you have. (I've done about 16. 2 or 3 required some moderately extensive stoning to get a good second stage. The others were drop in.)
Adjustments are simple and minimal.
If you're not comfortable with doing your own work, I believe that you can send the unit to Neal and he'll do it for you for a nominal amount.
Whether the 2-stage helps is not questionable -- it's a nicer pull.
(The 2-stage is actually a safer trigger design since it's not necessary to have a 'knife-edge' sear engagement on the first stage -- which is why the Mauser brothers designed their military bolt rifles with them over a hundred years ago.)
Whether it's in the spirit of the rules is also IMO not questionable -- there were legal 2-stage triggers in the game from the beginning...until some whiners started crying that they didn't have them so they should be illegal.
Whether we'll go through another rule quiffle -- this is SILHOUETTE! :-D