no: even if i've not finished the whole installation, i'm sure you don't need the vfat partition. but if you own an n810 it could be usefull to exchange datas through usb with your peecee.
also, once the installation is finished, the only thing you have to do is to boot your device from the proper memory card/partition.
if you don't know what i mean, you will find good tutorials googling the internet.
here are a couple:
https://wiki.maemo.org/Booting_from_a_flash_card
https://wiki.maemo.org/Advanced_booting
(in the second one you will find another reason for the first partition to be vfat).
be brave and enjoy