Hi Trishul
There is nothing wrong with your question. But it is just too generic to make any recommendations.
Liferay is a good product to be a single-window integration point for a company or a collaboration point across multiple organizations and users. But it is very hard to estimate an exact effort of achieving this in your case. You can definitely make a very robust system, without doubt. Eg., we have deployments that are used on munite-by-minute basis by employees of large organizations (.gov) and new-age collaboration systems across entire country (,gov and .com), also smaller real-time black box systems, such as RFID document and asset management. Each of those projects had and have own challenges, most of them are very specific to type of a project and user expectations.
From my point of view, if you go for Liferay:
* you must become an expert, or get someone with significant expertise from Liferay community, at least to initiate the project
* it is guaranteed that you will not be able to reach your goals with out-of-box Liferay only, java development will be required which will also involve modifications to Liferay core
* there is a long list of do's and dont's, which is hard to compile as they swap sides depending on requirements
* client-side performance could be a big challenge if SOE is IE6-based
* there is no need for a big software development team even for large projects, a couple of sw developers could be enough
* gradually build your own expertise, do not get hijacked by a third party.
* you can achieve a fairly fast delivery of systems and new features, some our projects required only 10 days between first engagement and go-live dates
Liferay forum is an excellent place to get friendly (and free) day-to-day advice, support and encouragement. And if you choose Liferay to be The Platform, you will always receive good recommendations and answers for all your specific questions.
