Well done on getting your XYL to buy you a holiday. I hope you enjoy the Lake District.
Having done that round nine times by now; three of them with just VHF QRP, I can confirm that you should have little problem in getting your four contacts. Helvellyn and Fairfield are big enough to get you out very well even if you have just 2 Watts to a rubber duck. Seat Sandal is smaller but still well placed to cover a wide area.
If you had to elect the poorest one for coverage, it would be St Sunday Crag LD10. ‘Poorest’ does not mean poor but you may well find you get fewer contacts from there than from the others. That said I have always qualified easy enough and one time that was with just a rubber duck. To save your time, whilst at the same time pleasing more chasers, I suggest that you alert your approx. QRV times, take an external antenna such as a J-Pole or other half-wave and also get someone to spot you if you can’t spot yourself. I was on these four in March and all had EE (Orange) mobile coverage then.
Despite the fact that it’s argueably the most efficient method in the UK of picking up 32 points (44 in winter) the route is not completely undemanding but it’s well walked which makes wayfinding easier. The best place to start is Patterdale Pay & Display opposite the hotel. Go via Hole-in-the-Wall and I would suggest not wasting time on Striding Edge. Swirral Edge is significantly quicker and when there’s no snow or ice, safe enough. Coffa Pike between LD7 and LD10 is quite steep and loose but again if there’s no ice there’s no problem. The final walk off St Sunday should not be underestimated as is steepish and a bit hard on the knees near the end. Allow an hour or more.
Total ascent is under 5,000 feet and I think it’s about 11 or 12 miles. If you need a .gpx route or some idea of times, send me an email (See QRZ.com)
As for SS73. There is a Whitley Bomber in Loch Enoch with apparently bits at the side. You may have seen something of that but not very likely.
I will be in LD from 5th to 9th June so if you’re there then I will listen out for you.
Hope you get good WX,
73, John G4YSS.