I agree HOW Big is the site, how much sun light will it get AFTER leaves develop
first thing I'd do is a soil test, before you spend a bunch of HRS and hard work, only to find out your screwed on soil PH
if the plot gets shaded out come leave up, you could be wasting your time too, as it will cause a poor take
if you DON"T kill the existing weeds, plants there with a round up like deal, your clover will fastly be out grown by weeds and before long all clover will be a SMALL percentage of the plot and over time even less!
a small back pack sprayer or the likes can help burn down weeds with a chemical(not fire burn down but chemical BURN down)
I have done a bunch of remote plots, have yet to have one I could walk a tiller into I couldn;t get to with an ATV
but even an atv isn't the best at tilling ground with a drag behind ATV like disc
I'd do soil test, NOW if possible
get in there after test and LIME up as needed and then some
then, MIX lime if possible with what ever you can, hand rake, or tiller
do this best you can
and then, wait till green up, once weeds are GREEN and growing and about 6-7 inches tall, I would go back and spray to kill, wait a day or so, and re seed it and fertilize it, and HOPE for the best!
I'd cut back as many tree's as possible too, to help keep sunlight on plot IF you can LEGALLY do so!
hing cut many too, to help make access to plot more selective by dropping in ways to BLOCK a million ways into plot and have them walk where YOU want them more too!