hi rob,ill be up there from aug 24 to sept 15, ill check out the forecast for the week ahead, if its ok do a 7-8 day trip around sarek, mostly x-country and high level, if the forecast is bad i will do the nordkallotleden from abisko to kilpisjarvi which should take about 8 days, its all on trail with huts if needed, then back to abisko and finish with a 8-9 day loop around abisko, saw my first northern lights in sept several years ago while spending the night in the topstugan on kebnakaise, if the conditions are good its a little bit of heaven, im also going solo, perhaps we might cross paths, good luck.