Oh god no…
Say no more! I was looking at that one but in the end I was about to pull the trigger on
https://wordpress.org/plugins/lj-maintenance-mode/
Which seems light weight and isnt trying to sell pro features.
Just thought I’d put that one up there for anyone looking for something that doesnt look so bloated.
At this stage it looks like I wont need it after all. π
Thanks for your response though, I appreciate the help and its always better to ask people with experience then jump in the water without looking.