Certainly doable, but you'll be playing musical chairs with Spurs, Everton, West Ham, and Liverpool for 5th and 6th.
Yeah, it will be tight & would mean us having to maintain our ok form. We play West Ham this weekend so that will tell us if it's realistic, still got Liverpool & Everton to play at home as well.
It's pretty mental at how tight even top 6 is this year, 6 teams fighting for two spots, wouldn't you prefer to have a year our of Europa ? I know you always want to see your team in europe of course but I think in the long term it will benefit Arsenal especially after what will be a brutal schedule witn the euros this year, player fatigue next season will play a massive part and I feel teams outside of europe will have that added bonus of longer rest period.
The Europa question is really a difficult 1. On one hand, it would probably do us good, not to be in the usual Thursday cycle of recent year's & all that travelling. Like you say, rest weeks after a congested season with a summer tournament plus an AFCON scheduled mid season could be advantageous.
On the other hand, not getting Europa League could affect our budget a bit in the summer, & we are already struggling finance wise. I quite like the early stages for playing fringe & young players as well & getting them some game time. I certainly wouldn't lose any sleep if we don't make it from a playing perspective, put it that way.