Jay, congrats on going old school! I did the same this past year (except I went with an Elan S1) and am having the time of my life. I have been lusting over your Europa ever since XLIHR8N bought it as the twin cam Europa has always been one of my boyhood dream cars. And yours is in wonderful condition.
Although the I don't own a Europa, I know many who do and the decision to take the booster off is based mainly on keeping it original or that it doesn't really work well. The majority take them off with the understanding that a different master cylinder needs to be installed.
Enjoy the experience of old technology. Just remember, regular maintenance is a must and don't drive too far from home (I've owned over a dozen older British sports cars in my lifetime, they always seems to fail when you think everything is working just right).
When (if) you ready to sell the Europa, I'm first on the list!
65 Elan S2 - Restored & For Sale
72 Europa- Restoration finished
69 Elan S4 - Restored & Sold
64 Elan S1 - Restored & Not for sale
12 Colin 30 - Lotus Racing Kart - Sold
07 Exige S - Wicked Road/Track Car - Sold
07 Exige S - Fast Road/Track Car - Wrecked at track
06 Elise - Track pack - Sold