I'll do my best to answer your original concern, re: APA merger. I'll also be adding some occasional URLs to help others understand what the REC sets forth as sound doctrine. I appreciate your interest and feel free to ask further, tho more specific, questions.
Personally, I uphold the 39 Articles, the Canons of Dordt, and a vast majority of the WCF. If a church does not uphold the Calvinist soteriology of the reformed faith, I would not be a member, period. I detest arminianism as a false offer and an anti-biblical proclamation.
As far as sermons go, I have witnessed very effective 15 minutes sermons as well as very disjointed 40 minute sermons. I am unsure of where scripture places a time restraint on this, but I would estimate the average to be between 20-30 minutes and they have all contained the gospel.
