I think I have mentioned Wicklow head before on this forum but may as well put it here now that you have gone to the trouble to create this spot :clap:
If you travel throught the main street in wicklow town heading south and follow the road out past the gaol (how the locals like to spell jail!). This road is signposted "Brittas Bay" and takes you out past Wicklow Golf Club. Not far after the Golf Club there is a public car park on the left, then a very sharp right-left chicane on the road. Slow down after this as about 150m further out this road you will see a red 5 bar gate on the left. It is marked "Commissioners of Irish Lights" and says that there is no public access. This is a popular walking spot and there is never an issue with access. Total distance is < 2km from Wicklow Main Street.
You can drive right out to the lighthouse (over 2 or 3 cattle grids) and park just outside the gate of the lighthouse compound. Lift (as with any coastal site in my experience) is unfeasibly smooth and is good in all wind strengths once the wind is from the East.
If the wind is slightly North of East, you can launch at a sort of nook just at the last sharp bend in this access road, around half-way between the last cattle grid and the lighthouse. The lift can be quite good here and we have done plenty of combat and general flying here.
Hope this is of some help
Garry