Refine Two One-Minute Videos

I have two short videos, each roughly 60 seconds, that need a quick but high-quality polish. Here’s what I’m after:

• Replace the current backdrop with a clean office setting that looks natural and well-lit.
• Add classic, elegant text overlays—my logo brief intro, a lower-third or two for key names/titles, and a closing line—so only the introduction and conclusion receive on-screen text emphasis.
• Trim out the minor verbal stumbles and awkward pauses without losing the overall flow or sync between audio and lips.
• Return two finished files in 1080p (H.264/MP4), ready for immediate upload to GBP, with audio levels normalized.

If you’re comfortable masking, keying or roto-brushing backgrounds and working quickly in Premiere Pro, Final Cut, or DaVinci Resolve, this should be a straightforward task. Please let me know your expected turnaround and share one or two links that show similar background replacement and tasteful text work.