Boosters are only a hassle if you did not do it right first time even Works escorts ran two boosters in the BDG and BDA models,I have been involved in building them back in the Day but they are much more common now in Australia,Works Nissan PB210,710 and Stanza all ran them.
I have owned an Ex works 210,and run a works spec Stanza back in the 80's so I do know what I am talking about and modified many 120Y's and 1200's over the years done properly it is a good upgrade.
But all must be aware you do not just go down to a wreckers and expect to find something that does not require an overhaul on cars over thirty years old before you fit it to your car.