As for following the Glideslope, or the PAPIs, that will put you on a 3 degree glideslope, and is not really what is required for VFR GA aircraft.... Is there a recommended glideslope for GA aircraft, I have heard 6 degrees mentioned, but why..
I've never seen or heard of pilots having an option to choose the glideslope angle on an ILS....you have to find a way fly the published Glideslope angle because you are stuck with whatever glideslope angle was built into the ground installation.
If you try to fudge it to generate a steeper approach by flying with the needle off centre (i.e deliberately flying a dot or two dots above the 'slope) to produce a steeper glide you are into the vaguely uncalibrated and certainly the unknown and all the procedure check heights (e.g marker/DME) would be rendered usless .... all bets would be off .. (and you'd fail an instrument rating...).
https://www.google.fr/search?q=ils+g...UfXX-DAk_pAIM: