Speak direct and voice clearly your questions, expectations, and feelings
Go with your first impressions, although nothing is 100% predictable
Of course, work is stressful. The kids have many needs. Our parents can become needy as well. Relationships are ...well...relationships. Life is going to happen regardless to how you "feel" about it. Exercise, relax, laugh and be a part of good times frequently.
And you will find yourself, a lot more relaxed and on your way to being a better communicator!