Hello, welcome to the forum.
I don’t mean to be negative but with 440 score it could be a wait, maybe a never ending one. Historically, I believe score dropped below 440 only once in recent couple years. The score has been hovering in the 450s, with the last 3 invitations being 470, 465, 462.
So to answer your question, your chances as it is on the EE pool is slim. Yes, if you get selected for OINP please do apply as it will give you much needed boost for your score.
Some things to consider:
1. Is it possible for you to improve your CRS score from language? This is typically the easiest way.
2. What is your highest level of study? Maybe with another diploma you can get more competitive score.
3. What does your agent advise you to do? Just submit your profile and sit in the pool? If yes, reconsider using another agent or not at all as this does not help you at all.
Good luck and I’m sure other seniors and members of this forum will be glad to give in their 0.02 cents.