It is not really aggressive if you are planning on growing your company. Typically, a high growth oriented venture funded startup is looking to get about 12-18 months of runway from their funding, hit some metrics and get funded for series A, repeat. 2M seed round at 5 employees means avg per employee spending of 260k / year. This is assuming you're not bringing any revenue in yourself.
I suppose it depends on whether you're running a startup with revenues or not. I am operating from the assumption that by series A you're about at the 1m arr revenue level and your revenue + funding are funneling your growth. YMMV with companies with low/no revenue.
Low-single-digit percent equity stakes vesting over 4 years for those employees is pretty in-line with what I've seen on https://angel.co/salaries.