Social Media Mashup Sweetening

I have two separate songs and short clips that need to flow together seamlessly for an upcoming social-media video. I’ll send you the individual audio files; I’m after a single, polished mashup with smooth, tasteful transitions, not an aggressive club remix... (Budget: $250 - $750 USD, Jobs: Ableton, After Effects, Animation, Audio Editing, Audio Engineering, Audio Mastering, Audio Production, Audio Services, Music Production, Sound Design)