I am a new brewer ( 5 AG BIABS only now) and did 3 or 4 extract brews first with steeping specialty grains/adding hop pellets/us 05 yeast but wish i didnt bother in hindsight. All my brews had kit twang and i did everything in my favour to end up without this. Make sure you have your temp control for fermenting sussed use good yeast, sanitise correctly and just get straight into Ag Biab. The sooner you do the sooner you can make good if not excellent beer, it really is much tastier, cheaper, fun plus as easy as coooking a recipe for dinner and as stated above takes bugger all time in between the critical points. Goodluck