Would agree with the guys about it being hard work on your own. 3.9 Volaire with a 20hp suzuki on it is about as much as I could haul up at my local slip on my own and it isn't very steep at all compared to some I've seen.
Couple of half fit beer guts and its ok
Cant help with your location but is there any fresh water river/lochs/lakes nearby with pebble/sandy banks which might be less busy and have better access for your first few launches?
We were/are complete newbies and did underestimate how daunting our first couple of outings might be.
Although we did try out on a quiet loch first which didn't end up with everything going to plan anyway. But at least we hadn't to worry about tides and other users.
Only been out a couple of short times now and already caught the bug.....
And there's also the option of a towbar/ traiker mod ater depending on your circumstances as a few have done on here if you have search.
So enjoy and be safe