We're flying to Ljubljana Friday 27th Feb, then heading up to the Krma valley the day after (probably staying in Kranjska Gora). We shall look at starting the east route to Triglav on Sunday 1st March depending on the weather. (We fly back to the UK on Sunday 5th March so there's plenty of time). I had a look online for places renting snow shoes in Ljubljana but couldn't find any, might just have a look when I get there as I need to buy some gas for the cooker as well.
Thanks again for the advice, I'm sure we probably owe you a drink by now!