Sweet ZZ UK Outside Very Early

I have started this seed at the earliest time of year i've done before. 1st day she was put into a glass of tepid water. Then transferred into damp kitchen paper on day 2. Then she popped. I have put her in my own compost from the garden which isn't quite fully composted yet so there is plenty of oxygen in it. I I am starting her on a sunny window sill through the day and under a cfl through most of the night. Luckily I have good weather forecast for the first week.