President Reagan prepared himself to begin lobbying Monday for a $48 million Contra aid proposal including as much as $5 million in arms currently stuck "in the pipeline" for the Nicaraguan rebels. Administration officials said Reagan studied the package of mostly non-lethal supplies during the weekend and was expected to endorse it without delay. Sen. David Boren, D-Okla., and nine other senators unveiled the plan Friday.

"It's quite an interesting plan," remarked Secretary of State George Shultz when asked about it on NBC's "Meet the Press" Sunday. Shultz complained it seemed "a little low on money" but predicted it would go forward. Aid to the Contras expired Feb. 29, but with House votes still uncertain, the new $48 million proposal was crafted to offer fresh non-lethal supplies while drawing upon only previously approved military aid.