Before you try shimming the neck I would make sure you have exhausted all other issues. Neck relief is a big factor in getting the action low. Take a straight edge and lay it on the fret board. You will see immediately if you have too much space in the middle of the neck. Also check the Nut. If the nut is too thick or has not been filed correctly the strings will be too high off the neck. The only other thing then is the bridge and saddles. I have a good tech who sets up all of my guitars. I demand as low an action as possible, and I have several Squiers that are below factory settings. In fact one of my Squier Standards has the lowest action of any of my guitars. I do not use the tremelo bar, and I have my bridge set as low as possible. That can be adjusted by using the spring tension adjustment on the back of the guitar. With that pulled down almost to touch the body, I have almost a hardtail strat. Then the saddle adjustments are all it takes to bring it down. I really have never had a guitar even as lowly as a Squier that could not be set up to my exacting standard of low action. Try this before you take the neck off and start messing with it.
As far as living in Germany I really think that you must be able to find a good tech, being a musician you should be able to network with other musicians and find a good one.
The Blues is alright!
Guitars: 1968 Gibson SG, 2005 Gibson SG Standard, 2006 Gibson LP Classic Gold top, 2004 Epiphone Elitist LP Custom, 1996 Gibson Les Paul Standard. 2001 Epiphone Sheraton II, 2007 Epiphone G400.
Fender Strats: 1996 Fender 68 Reissue CIJ, 2008 Squier CV 50s, 2009 Squier CV 50s Tele Butterescotch Blonde
Amps: Blues Junior Special edition Jensen in Brown Tolex with Wheat front, 65 Deluxe Reverb reissue,1970 Sonax reverb by Traynor, Avatar Custom 2/12 Cabinet with Eminence Legend V1216 speakers,
2008 DSL100 Marshall Amp , Fender Super Champ XD,Fender Vibro Champ XD
Effects and Pedals: Fulltone Fulldrive II, Fulltone OCD, Fulltone Mini Deja Vibe, Fulltone Fat Boost, Dunlop Crybaby Wah, Boss DS1, Boss DD20 Giga Delay, Boss TU2 tuner, Boss BD2, Ibanez TS9 Tube screamer, Zoom 505. Radial tonebone hot british.