10 pages data in single column

im working on database app, using vb.net & ms sql server, in some of my tables there is one column for "Notes" this column could be upto 10 full pages of text, my first question is wheather its appropriate to use (text) datatype for this column, since im not sure using (text) datatype wont slow down the system when having load of database ......
futhermore i need to use (ms word) like capabilities for that column in dataforms, and whatever user wrote in this column save into sqlserver table column "Notes" instead saving as file.
simply this (ms word) like textbox must have databindings with database table's column "Notes"

thanks ...