Extra E300 pilot reported while attempting to land they took evasive action to avoid a collision with a King Air that entered the runway while the Extra E300 was on short final.

Narrative

I was announcing my position and landing intentions on ZZZ CTAF beginning 10 miles out; then ~5miles out on the 45 for left traffic; then on each pattern leg; with my aircraft lights fully illuminated; during a day VFR approach to land. While on downwind I observe a King Air stopped in the run up area. I make my base turn as well as announce the turn using CTAF where I communicate that I'm 'base to final; 20'. (My standard practice; in the interest of safety; is to perform power off 180 type landings to ensure I reach to runway in the event of an engine failure). At this point the King Air begins to move towards the runway and announces they are going to line up and wait (per FAA: 'Line Up and Wait; is not acceptable procedure at non-towered airports'). I was confused and surprised that they said they were going to line up and wait; as I was only a few seconds from touchdown; however the pilot on CTAF was a non-native speaker and I thought perhaps he was saying he was going to wait for me; however as I neared to runway; they pulled out onto the displaced threshold and stopped there; then announced they were going to takeoff I once again used CTAF to announce that I was on short final; which prompted the King air pilot to say something unintelligible. I was at low altitude (~190 ft AGL); in a high-performance tailwheel airplane which I can best see out of by performing curved turning approaches; or slips if flying straight in; so I elected to ease out of my left turn; and sidestep final approach course and move off over the grass to the right of the runway. I then became worried about the parachute jumping activity that takes places to the NW of the runway; where I had offset; and I also did not want to do a go-around with my belly and low wings blinding me to the King Air since I was unsure of their climb performance. I elected instead to accelerate while level; allowing me to see the King Air to my left as well as scan for any parachutes ahead of me. I saw no parachutes; and once I was certain I would be able to safely outclimb the King Air I began a climb and once approximately 900 ft above the King air I turned left to remain in the traffic pattern to return for a landing.Typically at ZZZ; pilots will perform a taxi turn before entering the runway; this is because downwind is on the same side as the run up area and downwind/base traffic can be missed if you're pointing towards the runway threshold. The King Air crew did not turn to look; and did not seem to heed the CTAF calls of landing traffic; until seemingly trying to cutoff landing traffic; in violation of § 91.113 (g).It's my view that the King Air crew needs remedial training on operations at non-towered airports; especially such busy ones. ZZZ has two runways; parachute activity; extensive fixed wing and rotorcraft training operations; and ADS-B and CTAF usage are optional so pilots operating here absolutely must look around in order to fulfill their responsibility to see and avoid.