。
I'll be there in about 10 minutes too.
Literal
I-[also-も] 10-minutes about [within-で] go-[polite] [reason-から].
で here marks the time duration within which the action will be complete ('in 10 minutes'). くらい ('about, approximately') softens the time estimate. から gives a reasoning context ('because, you know') rather than a direct causal reason.