Help Eurotrip

This the tentative plan that I’ve come up with. I realize that I’m being a little over ambitious. I need some advice as to what I can skip completely and also suggestions for places that I’ve missed out on.I want to include Rome and maybe even Venice but i can’t seem to work out how.Some help please!!!

Brussels
Amsterdam
Berlin
Prague
Vienna
Garmisch
Baden Baden (Black forest)
Interlaken
Barcelona- Ibiza-Valencia
Toulouse
Paris-Versailles
London

The trip is to be for about a month. I’m interested in sight-seeing, beaches and night-life.

Hey! So I’ve been dying to do a Euro Trip. I spent the majority of last winter scouring travel books, sites, and anything else I could get my hands on. I decided upon a handful of places to hit in May. I get off from college the 2nd of May and am willing to travel up until the 24th or so.

I was leaning more or so the 8th to the 23rd (dates can be flexible).

Would it be plausible to hit Rome, Italy first. Then fly to Barcelona to spend time there and take a day trip to Figueres to see Salvador Dalí`s museum. Then I would fly to Ireland to see friends from the summer who live there.

Really do need help with this trip. Travelling from Uk to roscoff, where do I go from here to get to paris and what is the fastest route from paris to Holland?