I have not tried G. Lalo. Once I found tomoe river planners, I stopped experimenting with paper. I mostly integrated fountain pens into my day-to-day workflow and don’t do anything particularly special with them anymore.

Yes, ghosting can be an issue with TR. Have you looked at Rhodia or Clairefontaine? Both have a good feel and play nice with fountain pens, but I don’t know if they sell lined loose leaf.

I’m a big fan of Tamoe River. It’s a light weight paper that plays great with fountain pens. It should be sheer enough for a guide sheet.

I’m not familiar with that pen in particular, but railroading may be associated with the ink rather than the pen. Try a regular ink and see if you still get railroading.

Shimmering inks carry tiny particulates that can get stuck in the feed and obstruct flow. Sheening inks can form crystals in areas where it’s dried out a bit. A simple ink or even a lubricated ink may give you the flow you’re looking for to keep up with the flex.

Good luck!