While I also think that 100% investment in high risk with 27 years to run, is fine (in fact I'd think its fine if you've only got 15 years to run) ...
I'm wondering, are you proposing to move a lump sum in and buy units at the current price, or just start regular contributions into this new fund (starting from zero, and buying units each month) ?
My reason for asking is because it's debatable as to whether this is the right time to be putting a significant lump sum into a high risk fund (for fear of it dropping 20% - 30% - 40% over the next 1-2 years).