Macro
Get Linux. Dual boot or whatever. If you're playing H&H then there's nothing in windoze you can't do in Linux, better/safer/faster/cheaper. If you've never used linux before then Ubuntu's best release will be 10.04LTS/Lucid until the next Long term support release. Almost everything works out of the box and it can be dual booted and installed from within windoze with WUBI.
Get Xnee and GUI/panel apps Gnee & pnee if you like.
Record in full screen if possible to ensure synchronicity. Renice to prioritize xnee & the haven client to minimize lag and guage server lag to slow/speed up a macro depending on the 'weather'. Use standard arrangements by forming corners with snap to grid construction signs and using them as a reference point for beginning macros.
Macro Farm massive amounts of land if your system can handle it. If not, edit the client to replace the graphics with easier clicked, single sprite, images for less lag generation and more reliable macros.
Farm
Use plots that directly replant into plots thrice their own size and q sort out of a 5x5->5x10->15x10->45x10->45x30 etc. if you like. Best setups utilizes a 5x5 for every crop but fewer 5x10's and fewer etc. rotating crops as needs for production vary. For example I have a 5x5 for almost all crops, 5x5x10, 4x15x10, 2x45x10, 1x30x45. Poppies, for example are best suited for ending at a 10x15. If you're building a lot of mansions because the awesomeness of this system generates fucktons of fodder ~10-15q less than hand sorting all seeds and can throw up two mansions every replant if you take the wheat to the top or several hundred linen.
Oh and...this is really the only way to utilize seedbags for massive amounts of quality product. Seriously, prove me wrong. Because it is suited for massive amounts of seedbags to make harvesting and planting of the operation so quick and painlessly awesome, you will find that need to craft fucktons of seedbags. This, moreso the more people become involved in the operation.
It's also ideal because anyone cvan get LP replanting and thus in a community of varying skill newbies can catch up to community crop quality more quickly and plots can be multiplied any number of times without significant quality loss because even one more flip doesn't bring the average down more then 40. this way the best farmers can be responsible for the smallest portions of the community farm and no matter who harvests it doesn't permanently fuck up the community stock quality which is generated and maintained with minimal effort. Intuitively reducing the likelihood that IRL shit interferes with community based production structures like this one fail.
In fact, the best farmers might even be made responsible for maintenance of their own collection of 5x5's so that the community stock provisions can be further guaranteed against the common failures of most mid sized villages.
TIP: If you do like I'm doing and build a long row of mansions then put your 5x5's at the northside with your milking cows unlike I failed to do.