nope - sounds like you will be just fine - hopefully the first part will be just reaching krausen.
A lot of smaller breweries do exactly what you plan. my local brewery is a 15bbl system, but they have several 30bbl fermentors.
BTW, i know you said you've been successful with it in the past, but making starters with dry yeast isn't so good for the yeast. and at ~$3 per sachet, you aren't really saving much by doing it if you're using DME. just saying...